JP4740047B2 - Manufacturing method of colored wood - Google Patents

Description

  The present invention relates to a method for producing colored wood in which wood is dyed and dyed with a dye liquor and related techniques.

  As a method of coloring the decorative surface of a decorative flooring material or a decorative wall material in which a veneer is attached to a base material such as plywood, after attaching the veneer to the base material, the pigment is directly attached to the surface of the veneer and amino or urethane A method of applying a resin such as, and a method of dyeing a veneer first and attaching the colored veneer to a substrate are well known.

Furthermore, in the latter coloring method, as a method of coloring the veneer, as shown in the following Patent Document 1, a wood is cut to produce a veneer (a veneer), and then the veneer is dyed, or the following patent document: As shown in 2 and 3, a method of obtaining a colored veneer by dyeing wood and then cutting the wood is generally employed.
JP 58-28303 A JP-A-8-244006 JP-A-8-57804

  In the conventional method for producing a colored veneer shown in Patent Document 1, the veneer is dyed one by one. Therefore, enormous time is required to dye a large number of veneers, resulting in a decrease in production efficiency. There was a problem of coming.

  On the other hand, in the conventional method for producing colored wood shown in Patent Documents 2 and 3, since the colored wood is obtained by cutting the colored wood after dyeing the wood, the state of the wood before the cutting is cut. This eliminates the need for low-efficiency operations such as dyeing single sheets one by one, and can improve productivity.

  However, in the method for producing colored wood shown in both Patent Documents 2 and 3, when dyeing wood with a dye solution, in order to stain the cell walls and the inside of the wall with certainty, the cells and the spaces between the cells are covered with the dye solution. It is necessary to satisfy enough. The state corresponds to a state in which wood having a moisture content of 10% is impregnated with 110 to 150% of the dye solution. The dye solution after dyeing the cell walls and the inside of the wall and the unreacted dye solution (unfixed dye) are: It remains in the wood as an extra dye component. If the wood is cut with this excess dye component remaining, the excess dye component appears as a dirty spot pattern on the surface of the cutting veneer, resulting in so-called uneven dyeing and deterioration in quality. There was a problem of coming.

  Further, even if the wood after dyeing is processed with the excess dye liquor remaining, even if it is cut after being dried to a moisture content that can be cut, dyeing unevenness occurs as described above.

  In order to prevent uneven dyeing, it is necessary to wash away excess dye components such as unfixed dyes after dyeing wood. However, in the normal cleaning method, there is a problem that the cleaning liquid cannot be sufficiently permeated throughout the wood, and it is difficult to reliably remove the excess dye component.

  An object of the present invention is to solve the above-mentioned problems of the prior art, and to provide a method for producing colored wood and related technology capable of reliably removing excess dye liquor components from dyed wood.

  In order to achieve the above object, the present invention is summarized as follows.

[1] a dyeing process for dyeing wood with a dye solution;
Washing the dyed wood with a washing liquid to remove excess dyeing liquid components, and
In the washing step, the cleaning liquid inside the wood is sucked and discharged from the other side mouth while forcibly introducing the washing liquid into the wood from one side of the dyed wood. Production method.

  [2] The method for producing colored wood according to item 1, wherein the washing step is performed in a state where the dyed wood is immersed in a treatment liquid stored in a treatment liquid tank.

  [2a] The method for producing colored wood according to item 2, wherein the same type of cleaning liquid as the processing liquid is used.

  [3] As a cleaning solution, an aqueous solution containing 0.5 to 3% acetic acid, an aqueous solution containing 2 to 4% formic acid, an aqueous solution containing 1 to 5% ammonia sulfate, and 5 to 10% sodium sulfate 3. The method for producing colored wood according to item 1 or 2, wherein a solution selected from aqueous solutions is used.

  [4] The cleaning step includes a one-way cleaning process in which a cleaning liquid is introduced from one end of the wood and discharged from the other end, and another direction in which the cleaning liquid is introduced from the other end of the wood and discharged from the one end. Item 4. The method for producing colored wood according to any one of Items 1 to 3, wherein the cleaning treatment is performed.

  [5] The method for producing colored wood according to any one of items 1 to 4, wherein wood having a moisture content of 5 to 20% is used as wood before dyeing.

[6] The method further includes a drying step of drying the washed wood,
6. The drying step according to any one of the preceding items 1 to 5, wherein the air inside the wood is sucked and discharged from the other side end of the wood while forcibly introducing the air from the one end end of the wood into the inside of the wood. A method for producing colored wood.

  [7] The method for producing colored wood as described in 6 above, wherein the moisture content of the dried wood is adjusted to 40 to 80%.

  [8] The method for producing colored wood according to any one of items 1 to 7, wherein wood having a thickness of 10 to 100 mm is used as wood before dyeing.

  [9] A colored wood produced by the production method described in any one of 1 to 8 above.

[10] A step of obtaining colored wood by the production method described in any one of 1 to 8 above,
Cutting the colored wood to obtain a colored veneer, and a method for producing the colored veneer.

  [11] A colored veneer produced by the production method described in item 10 above.

[12] A step of obtaining colored wood by the production method described in any one of 1 to 8 above,
Cutting colored wood to obtain a colored veneer;
A method of manufacturing a decorative board material, comprising: attaching a colored veneer as a decorative layer to a substrate to obtain a decorative board material.

  [13] A decorative board material manufactured by the manufacturing method described in item 12 above.

[14] A washing apparatus for dyed and processed wood for washing wood dyed with dyeing liquor with a washing liquid to remove excess dye liquor components,
One side connection member for connecting one end of the dyed wood to a sealed state via an elastic packing,
The other side connection member for connecting the other side end of the dyed processed wood in a sealed state via an elastic packing;
A cleaning liquid pressurizing supply means for pressurizing and supplying the cleaning liquid into the one side connecting member, and forcibly introducing the cleaning liquid into the wood from the one side end,
A washing apparatus for dyed wood, comprising: a washing liquid suction / discharge means for sucking and discharging the washing liquid inside the wood from the other side end through the other side connection member.

[15] It further includes a treatment liquid tank for storing the dyed and processed wood,
15. The apparatus for washing dyed wood according to item 14, wherein the dyed wood is washed in a state where the dyed wood is immersed in the treatment liquid stored in the treatment liquid tank.

[16] One-way cleaning means for sucking and discharging the cleaning liquid from the other side connection member while supplying the cleaning liquid under pressure into the one side connection member;
A second-direction cleaning means that sucks and discharges the cleaning liquid from the one-side connecting member while supplying the cleaning liquid under pressure to the other-side connecting member;
16. The apparatus for cleaning dyed wood according to item 14 or 15, further comprising switching means for switching between the one-way cleaning means and the other-direction cleaning means.

  According to the method for producing a colored wood in the invention [1], since the dyeing is performed in the state of the wood before cutting, when the decorative wood is produced by cutting the colored wood, for example, cutting A veneer for cosmetics can be produced more efficiently compared to what is dyed in the state of a later veneer.

  Further, in the present invention, when washing the dyed and processed wood, the cleaning liquid is forcibly introduced into the wood from one side end and the cleaning liquid inside the wood is sucked and discharged from the other side end, The washing liquid penetrates into the wood sufficiently and spreads to every corner, so that excess dye components such as unfixed dye can be surely washed away. Therefore, it is possible to reliably prevent an excess of the dye component from remaining in the cell cavity after washing, and it is possible to reliably prevent the occurrence of uneven staining due to the dye solution remaining.

  According to the method for producing a colored wood in the invention [2], since the washing is performed in a state where the dyed and processed wood is immersed in a treatment liquid such as a washing liquid, washing can be performed more effectively. That is, even if one end of a predetermined conduit in the wood to be cleaned is opened on the plate surface and the other end is opened in the other side end, the treatment liquid is introduced into the predetermined conduit from one end thereof. By discharging from the other end, it is possible to reliably wash out excess dye components in the conduit.

  According to the method for producing colored wood in the above invention [3], since a specific one is used as the cleaning liquid, the dye inside the wood is surely fixed by the action of the specific cleaning liquid to make the color vivid. Can do.

  According to the method for producing colored wood in the invention [4], since the direction of introduction of the cleaning liquid is switched, the cleaning liquid can be more reliably distributed throughout the wood.

  According to the method for producing colored wood in the invention [5], the moisture content of the wood is increased by the washing treatment, and then the moisture content is lowered by the drying treatment. Therefore, the moisture content of the wood can be freely adjusted. Can do. For this reason, a general-purpose and easy-to-handle desiccant having a moisture content of 5 to 20% can be used as a starting material (wood before dyeing).

  According to the method for producing colored wood in the invention [6], when the wood is dried, the air inside the wood is sucked and discharged from the other side mouth while forcibly introducing the air from the one side mouth into the wood. Therefore, the air for drying can be sufficiently circulated to the inside of the wood and can be efficiently dried.

  According to the method for producing colored wood in the invention [7], since the moisture content of the dried wood is adjusted to 40 to 80%, the wood in the next step such as cutting of wood or sticking of a cut veneer is performed. Processing can be performed in a suitable wet state.

  According to the method for producing colored wood in the invention [8], since the wood having a thickness of 10 to 100 mm is used as the wood before dyeing, the above-described effects can be obtained more reliably.

  Since the said invention [9] specifies the coloring wood manufactured by said manufacturing method, it can acquire the same effect similarly to the above.

  In the above inventions [10] and [11], the colored wood produced by the above production method is cut to obtain a single plate, and thus the same operational effects can be obtained as described above.

  In the above inventions [12] and [13], a decorative board material is obtained using the colored wood produced by the production method described above, and therefore, similar effects as described above can be obtained.

  Since the said invention [14] specifies one form of the washing | cleaning apparatus which can implement the washing | cleaning process of said manufacturing method, it can acquire the same effect similarly to the above.

  In the present invention, since both ends of the wood are connected to the connecting member through the elastic packing in a sealed state, the cleaning liquid can be introduced into and discharged from the wood through the connecting member at a predetermined pressure. Therefore, the cleaning can be performed more efficiently. In addition, even if the wood is further swollen by the cleaning liquid, the expansion is absorbed by the elastic shrinkage of the elastic packing, so that the sealing performance is well maintained and the high cleaning effect can be reliably maintained.

  According to the washing apparatus for dyed and processed wood in the above invention [15], since the dyed and processed wood is washed in a state of being immersed in the treatment liquid stored in the treatment tank, similarly to the above invention [2]. It is possible to clean more effectively.

  According to the washing device for dyed and processed wood in the invention [16], the introduction direction of the washing liquid can be switched as appropriate, so that the washing liquid is more reliably distributed throughout the wood as in the case of the invention [3]. be able to.

  Hereinafter, the case where a decorative floor material is manufactured from a plate material using the manufacturing method according to the first embodiment of the present invention will be described as an example.

  As shown in FIG. 1, the manufacturing method of the first embodiment includes a dyeing process (dye impregnation process) in which a plate material is impregnated with a dye solution and dyeing, and a dyed and processed plate material (dye solution impregnated). A cleaning process for cleaning the plate material), a drying process for drying the cleaned cleaned plate material, a flitch production process for manufacturing a flitch from the dried plate material that has been dried, and a single plate (colored single plate) by cutting the flitch And a veneer adhering step for producing a decorative flooring material by adhering a colored veneer to a base material.

  Although the board | plate material (starting material) used by this embodiment is not specifically limited, For example, wood, such as oak (oak), beech (beach), hippopotamus (birch), maple, Sycamore, is generally used. can do.

  As this plate material, there are those adjusted to an air-dried state (moisture content of about 8 to 15%) in order to prevent generation of mold and corrosion due to decaying fungi, etc., but in this embodiment, as described in detail later, Since the moisture content can be controlled, any moisture content plate material can be used without problems.

  Further, the shape of the plate material is not particularly limited, but for example, a log shape, a flat plate shape (plate material shape) and the like can be suitably used. In the present invention, any thin plate (single plate shape) can be used as long as it is a plate that can forcibly introduce the cleaning liquid from the mouth.

  Further, the size of the plate material is not particularly limited, but those having a thickness of 10 to 100 mm, a width of 50 to 150 mm, and a length of 100 to 1000 mm can be suitably used.

  As the coloring material contained in the dyeing liquid used in the dyeing processing step, a dye, a pigment, a material composed of both of the dye and the pigment is used, but it is preferable to use a dye to uniformly color the wood. .

  The type of the dye is not particularly limited. For example, an acid dye, an acid mordant dye, a metal complex hydrochloric acid dye, a basic dye, a direct dye, and a sulfur dye can be used. Can be suitably used.

  Furthermore, you may make it mix | blend an additive with a dyeing liquid suitably as needed other than dye. For example, a dispersing agent and a slow dyeing agent may be mixed in order to allow the dye to penetrate into the entire area of the wood evenly in a well-balanced manner.

  In the present embodiment, a dyeing apparatus (dye impregnating apparatus) for performing a dyeing process is generally used for dyeing wood, and includes a vacuum pressure tank capable of storing wood as a workpiece, And a dye supply means for supplying the dye into the tank.

  Then, wood is set in the vacuum and pressure tank, and the dyeing solution is heated and supplied into the tank, and the wood is immersed in the dyeing solution. Thereafter, the pressure in the tank and the dyeing liquid temperature are appropriately controlled, and the dyeing liquid is sufficiently infiltrated into the wood to be dyed.

  In the wood dyed in this way (dye-processed wood), the dye solution other than the dye soaked and fixed inside the wood remains in the conduit and the cell cavity as an extra dye component. Since the remaining excess dye component causes color unevenness as described above, it is necessary to perform a cleaning process to remove the excess dye component.

  In this embodiment, the apparatus shown in FIGS. 2 to 4 is used as the cleaning apparatus used for this cleaning process. This cleaning apparatus includes a connecting member (20a) (20b) connected in a sealed state to both ends of the dyed wood (1), and a cleaning liquid for supplying the cleaning liquid to the connecting member (20a) (20b) in a pressurized state. The pressure supply means and the cleaning liquid suction / discharge means for sucking and discharging the cleaning liquid from the connection members (20a) and (20b) are provided as basic components.

  The treatment liquid tank (10) is configured to store a treatment liquid such as a washing liquid or water, and is washed with the dyed and processed wood (1) immersed in the stored treatment liquid as described later. Configured to be processed.

  A base (11) is provided in the treatment liquid tank (10), and connection members (20a) are provided on the base (11) corresponding to both ends in the fiber direction of the dyed wood (1). (20b) is provided.

  The connection members (20a) and (20b) have support members (21) and (21), cover members (31) and (31), and elastic packings (15) and (15).

  The support members (21) and (21) are slidably attached to the length direction (fiber method) of the dyed wood (1) on the base (11), and the support member (21) ( 21) can be accurately arranged at a predetermined position with respect to the dyed wood (1).

  Both support members (21) and (21) are provided with connection ports (22) and (22), and both ends of the dyed wood (1) can be inserted and disposed in the connection ports (22) and (22). Has been.

  Moreover, packing installation recessed parts (23) (23) for compressing and deforming an elastic packing (15), which will be described later, are formed on the outer peripheral edge portions of the connection ports (22) and (22) on the outer surface side of both support members (21) and (21). ) Is formed.

  The elastic packing (15) is formed in an annular shape, and is configured to be fitted on the outer periphery of both ends of the dyed wood (1). The elastic packing (15) is made of an elastic material such as synthetic resin or synthetic rubber.

  The cover member (31) (31) is formed with a mouth end receiving recess (33) (33) for receiving both ends (1a) (1b) of the dyed wood (1) from both sides, and the recess (33). ) (33) is formed as a mounting flange (34) (34).

  Further, fluid outlets (35) and (35) are formed at the center of the recesses (33) and (33) in the cover members (31) and (31).

  In the present embodiment, the mounting flanges (34) and (34) of the cover members (31) and (31) and the outer peripheral edge portions of the support members (21) and (21) are attached by fixing means such as bolts and nuts (not shown). , And can be fixed to each other in a joined state.

  In order to set the dyed wood (1) in the connecting members (20a) (20b) having this configuration, the elastic packings (15) (15) are externally fitted to both ends of the dyed wood (1). In the state where the support members (21) (21) and the cover members (31) (31) are arranged on both sides of the packing (15) (15), the outer peripheral edge portion and the mounting flange of the support members (21) (21) (34) and (34) are bonded and fixed together by fixing means. As a result, the elastic packing (15) (15) is compressed between the members (21), (21), (31), and (31) by compressing and deforming the elastic packing (15) and (15), and the elastic packing (15) and (15) are then subjected to dyed wood (1). ) And the support member (21) (21), the clearance between the dyed wood (1) and the cover member (31) (31), the support member (21) (21) and the cover member (31) (31). ) Fill the gap between them in a sealed state.

  In this sealed state, the one side end (1a) of the dyed wood (1) is covered with the one side connecting member (20a) in a sealed state, and the other side end (1b) is covered with the other side connecting member (20b). Is covered in a sealed state.

  The one side connection pipe (40) is connected in a sealed state to the entrance / exit (35) of the one side connection member (20a). Further, one end of the supply side first pipe (41) is connected to the one side connection pipe (40), and the other end of the supply side first pipe (41) is connected to the pressure tank (43). It is connected. Further, a pressure pump (44) and a supply side cleaning liquid tank (45) are connected to the upstream side of the pressure tank (43).

  The supply side cleaning liquid tank (45) is provided with a discharge pipe (46). By opening a discharge valve (46a) provided on the pipe (46), the supply side cleaning liquid tank (45) is provided. The cleaning liquid (S) is discharged to a predetermined location through the drain pipe (46).

  The other side connection pipe (50) is connected in a sealed state to the inlet / outlet (35) of the other side connection member (20b). Further, one end of the discharge side first pipe (51) is connected to the other side connection pipe (50), and the other end of the discharge side first pipe (51) is connected to the discharge side cleaning liquid tank (55). Communication connection is established. A vacuum pump (suction pump 54) is connected to the downstream side of the discharge side cleaning liquid tank (55).

  The discharge side cleaning liquid tank (55) is provided with a discharge pipe (56). By opening the drain valve (56a) provided on the pipe (56), the discharge side cleaning liquid tank (55) is provided. The processed cleaning liquid (S) is discharged through the discharge pipe (56). Further, one end of a return pipe (57) is connected to the upstream side of the drain valve (56a) in the discharge pipe (56), and the other end of the return pipe (57) is connected to the supply side cleaning liquid tank (45). ). When the drain valve (56a) is closed, the cleaning liquid (S) recovered in the drain side treatment liquid tank (55) is returned to the supply side cleaning liquid tank (45) through the return pipe (57). It is configured as follows.

  In addition, one end of the supply side second pipe (42) is connected to the middle of the supply side first pipe (41), and the other end of the supply side second pipe (42) is connected to the other side connection pipe. (50). Further, in the middle of the discharge side first pipe (51), one end of the discharge side second pipe (52) is connected in communication, and the other end of the discharge side second pipe (52) is connected to the one side connection pipe. (50).

  In addition, a supply side first valve (41a) is provided downstream of the connection side of the supply side second pipe (42) in the supply side first pipe (41), and in the supply side second pipe (42). A supply-side second valve (42a) is provided in the vicinity of the connection portion with the discharge-side first pipe (51).

  Further, a discharge side first valve (51a) is provided upstream of the connection portion of the discharge side second pipe (52) in the discharge side first pipe (51), and the discharge side second pipe (52) is provided. A discharge-side second valve (52a) is provided in the vicinity of the connection portion with the supply-side first pipe (41).

  In this embodiment, the one-side connecting pipe (40), the supply-side first pipe (41), the supply-side second pipe (42), the pressure tank (43), the pressure pump (44), the supply-side cleaning liquid The tank (45) and the like constitute cleaning liquid pressurizing and supplying means. Further, the other side connection pipe (50), the discharge side first pipe (51), the discharge side second pipe (52), the vacuum pump (54), the discharge side cleaning liquid tank (55) and the like constitute a cleaning liquid suction / discharge means. Yes.

  The one-side connecting pipe (40), the supply-side first pipe (41), the other-side connecting pipe (50), the discharge-side first pipe (51) and the like constitute a one-way cleaning means, and the one-side connecting pipe (40), a part of the supply side first pipe (41), a supply side second pipe (42), the other side connection pipe (50), a part of the discharge side first pipe (51), a discharge side second pipe (52) etc. constitute the other direction cleaning means.

  Further, the supply side first and second valves (41a) (42a), the discharge side first and second valves (51a) (52a) and the like constitute switching means.

  In the washing apparatus configured as described above, when the dyed wood (1) is washed, as described above, both ends (1a) (1b) are provided at both ends of the dyed wood (1). 1) and the other side connection member (20a) (20b) are attached so as to cover the sealing state in a sealed state, and placed in the processing liquid tank (10) in that state and stored in the processing liquid tank (10). The dyed wood (1) is immersed in a treatment liquid such as a cleaning liquid (S).

  In addition, in this embodiment, sealing performance can be further improved by sticking a waterproof tape beforehand to the contact | adherence area | region with the elastic packing (15) (15) in dyed wood (1). it can.

  Here, in the present invention, the cleaning liquid (S) is not limited, but an aqueous solution containing 0.5 to 3% acetic acid (PH4 to 5) and an aqueous solution containing 2 to 4% formic acid (PH2). ~ 3), an aqueous solution containing 1 to 5% ammonia sulfate (PH6 to 7) and an aqueous solution containing 5 to 10% sodium sulfate (PH7) are suitable as the cleaning liquid (S) Can be used. That is, these unique cleaning liquid (S) acetic acid has the effect of fixing the dye inside the wood and making the color vivid. However, in the present invention, water such as clean water may be used as the cleaning liquid. Further, as the treatment liquid, it is preferable to use the same kind as the cleaning liquid (S) in order to improve the cleaning effect.

  After the dyed processed wood (1) is set in the cleaning device, the supply of the cleaning liquid (S) is started. That is, as shown in FIG. 3, the supply side first valve (41a) and the discharge side first valve (51a) are opened, and the supply side second valve (42a) and the discharge side second valve (52a) are closed. In the state, the pressure pump (44) and the vacuum pump (54) are driven. Then, the cleaning liquid (S) in the supply-side cleaning liquid tank (45) is sent to the pressurization tank (43) by the pressurization pump (44), from which the supply-side first pipe (41) and the one-side connection pipe Through (40), it is introduced into the one-side connecting member (20a) in a pressurized state. The cleaning liquid (S) thus introduced into the one-side connecting member (20a) in a pressurized state is forcibly introduced into the wood from the one-side end (1a) of the dyed wood (1).

  Moreover, in the discharge side path, since the inside of the other side connection member (20b) is set to a negative pressure by the vacuum pump (54), the cleaning liquid (S) introduced into the wood from the one side end (1a) Is sucked and discharged from the other side end (1b) into the other side connection member (20b), and further passes through the other side connection pipe (50) and the discharge side first pipe (51) to the discharge side cleaning liquid tank (55). Led.

  In this way, the cleaning liquid (S) is forcibly introduced into the wood from one end (1a) and sucked and discharged from the other end (1b), thereby remaining unfixed in the wood such as in the conduit or in the cell cavity. Excess dye components such as dyes are discharged out of the wood together with the cleaning solution (S).

  In the cleaning process, the supply direction of the cleaning liquid (S) to the dyed wood (1) is appropriately switched. That is, when the supply direction is switched as shown in FIG. 4, the supply side and discharge side first valves (41a) (51a) are closed and the supply side and discharge side second valves (42a) (52a) are opened. Then, the pumps (44) (54) are driven. As a result, the cleaning liquid (S) in the supply-side cleaning liquid tank (45) is guided from the middle of the supply-side first pipe (41) to the second pipe (42), and the pipe (42) and the other side connection pipe (50). And is introduced into the other side connecting member (20b) in a pressurized state, and the cleaning liquid (S) is forcibly introduced into the wood from the other side end (1b).

  Further, in the discharge side path, the inside of the one side connection member (20a) is set to a negative pressure via the discharge side second pipe (52) and the one side connection pipe (40). ), The cleaning liquid (S) introduced into the wood is sucked and discharged from the one-side end (1a) into the one-side connection member (20a), and further, the one-side connection pipe (40) and the discharge-side second pipe (52). And is led to the discharge side cleaning liquid tank (55).

  In this way, the cleaning liquid (S) is forcibly introduced into the wood from the other side end (1b) and sucked and discharged from the one end end (1a). The dye liquor component is discharged and removed to the outside of the wood together with the cleaning liquid (S).

  As described above, in the cleaning process, the one-way cleaning process for introducing the cleaning liquid (S) from the one end (1a) of the wood (1) and the two-way cleaning for introducing the cleaning liquid (S) from the other end (1b). Processing. In the present embodiment, each process may be performed a plurality of times by switching the one-way cleaning process and the other-direction cleaning process many times.

  Further, during the cleaning process, if the drain valve (56a) of the discharge pipe (56) in the discharge path is closed, the cleaning liquid (S) collected in the drain side processing tank (55) is returned to the return pipe ( 57) and returned to the supply side cleaning liquid tank (45). Accordingly, the cleaning liquid (S) can be circulated and reused, so that the cleaning liquid (S) can be effectively used, and cost can be reduced.

  Here, in the present embodiment, the pressure when the cleaning liquid (S) is introduced under pressure from the end (1a) (1b) is preferably set to 200 to 1500 kPa, more preferably 300 to 500 kPa. Further, the pressure (suction force) for sucking and discharging is preferably set to 1.3 kPa (10 torr) to 13 kPa (100 torr), more preferably 2.6 kPa (20 torr) to 6.6 kPa (50 torr). That is, if the introduction pressure or suction force is too low, the cleaning liquid (S) cannot be allowed to flow while reliably penetrating the wood, and it may be difficult to reliably remove unfixed dye. . On the other hand, when the introduction pressure or the suction force is too high, the sealing part such as the elastic packing (15) (15) in the connection member (20a) (20b) cannot withstand high pressure and the watertightness is destroyed. There is a possibility that it cannot be reliably washed, which is not preferable.

  On the other hand, after the above washing process is completed, a drying (draining) process is subsequently performed. This drying process is performed using the cleaning apparatus shown in FIGS.

  That is, the cleaned wood (1) is taken out from the treatment tank (10), and the connecting members (20a) and (20b) are connected to the both ends of the wood (1) in a sealed state as described above. Then, the supply side first valve (41a) and the discharge side first valve (51a) are opened, the supply side second valve (42a) and the discharge side second valve (52a) are closed, and the supply side cleaning liquid tank ( In a state where 45) is disconnected from the supply-side path (circuit), the pumps (44) and (54) are driven, and compressed air is sent from the pressurizing pump (44) into the supply-side first pipe (41). As a result, compressed air is introduced into the one-side connecting member (20a) via the one-side connecting pipe (40), and the compressed air is forced into the wood from the one-side end (1a) of the cleaned wood (1). Introduced. Moreover, in the drainage side path, since the inside of the other side connection member (20b) is set to a negative pressure by the vacuum pump (54), the air inside the wood is sucked and discharged from the other side end (1b). Is discharged to the outside through the other side connection pipe (50) and the discharge side first pipe (51).

  In the present embodiment, it is also possible to use heated air as the air introduced into the wood. In this case, the wood (1) can be efficiently dried by circulating hot air as heated air inside the wood.

  Also in this drying process, it is preferable to switch the air flow direction as in the above-described cleaning process. That is, the supply side first valve (41a) and the discharge side first valve (51a) are closed, and the supply side second valve (42a) and the discharge side second valve (52a) are opened, and the pump (44 ) (54) is driven. As a result, the compressed air is introduced into the other side connecting member (20b) via the supply side second pipe (42) and the other side connecting pipe (50), and the compressed air is introduced into the wood from the other side end (1b). Introduce to force. Further, the air inside the wood is sucked and discharged from the one side end (1a) by the vacuum pump (54), and the air is discharged to the outside through the one side connection pipe (50) and the discharge side second pipe (52). . By switching the air flow direction in this way, air can be uniformly introduced into the entire wood interior in a balanced manner, and the drying process can be performed more efficiently.

  Here, in this embodiment, the pressure at the time of introducing air from the end (1a) (1b) is set to 200 to 1500 kPa, preferably 300 to 500 kPa. Further, the pressure (suction force) for sucking and discharging is preferably set to 1.3 kPa (10 torr) to 13 kPa (100 torr), more preferably 2.6 kPa (20 torr) to 6.6 kPa (50 torr). That is, if the introduction pressure or suction force is too low, air cannot be reliably circulated throughout the wood, and there is a possibility that it cannot be dried efficiently. On the other hand, when the introduction pressure or the suction force is too high, the sealing parts such as the elastic packings (15) and (15) in the connecting members (20a) and (20b) cannot withstand high pressure, and the airtightness is destroyed. There is a possibility that it cannot be dried reliably, which is not preferable.

  In the present embodiment, the wood (1) has a moisture content of 100 to 140% by the washing treatment, but it is preferable to adjust the moisture content to about 40 to 80% by the drying treatment. That is, the moisture content suitable for wood processing such as cutting and sticking of wood is 40 to 80%, and by adjusting the moisture content suitable for this wood processing, subsequent treatments, that is, the cutting process and the sticking process are performed. It can be performed efficiently and smoothly. In other words, since the moisture content of wood can be adjusted by the washing process and the drying process, it is not necessary to adjust the moisture content of wood in a separate process, and accordingly, the number of processes can be reduced and production efficiency can be reduced. Improvement and cost reduction can be achieved.

  In the present embodiment, the wood (1) is dried by forcibly introducing and discharging compressed air into the wood. However, the present invention is not limited thereto, and in the present invention, the wood (1) is naturally dried. Drying treatment such as natural drying or warm air drying in which wood is placed in a high-temperature heating container may be performed.

  The dried wood (colored wood) is bonded in combination in the next step to produce a wood flitch (flitch preparation step).

  Thereafter, the wood flitch is cut with a slicer to produce a single plate or a veneer (colored single plate) (cutting step).

  The colored veneer (including the veneer) thus obtained is applied as a decorative layer to a base material to produce a decorative flooring (single plate attaching step).

  Here, as the base material of the decorative flooring material, a synthetic resin material or a rubber material can be used in addition to a wood material such as a plywood, a particle board, a wood fiber board, and a laminated material. Furthermore, these materials may be used alone to form a base material, or a plurality of materials may be used in combination to form a base material. When used in combination, for example, a base material is formed by combining plywood and wood fiber board, or a base material is formed by combining high specific gravity sheet (ethylene propylene rubber) and wood fiber board. Can do. Alternatively, the veneer attached on the substrate may be painted to form a decorative layer.

  As described above, in the present embodiment, dyeing is performed in the state of wood before cutting, and the colored wood is cut to form a large number of single plates. Compared to the case of dyeing one sheet at a time, a veneer for makeup can be produced efficiently.

  Further, in this embodiment, when washing the wood (1) after dyeing (after impregnation with the dyeing solution), the washing liquid (S) is forcibly introduced into the wood from the one end (1a) of the wood (1). In addition, since the cleaning liquid (S) inside the wood is sucked and discharged from the other end (1b), the cleaning liquid (S) penetrates into the wood sufficiently and reaches every corner, and extra unfixed dye, etc. It is possible to surely wash away the dye components. Therefore, it is possible to reliably prevent excess dye components from remaining in the cell cavity after washing, and to reliably prevent the occurrence of uneven staining due to the remaining dye solution, resulting in a high quality finish with a good finish. Colored wood can be manufactured, and as a result, a high-quality colored veneer can be manufactured.

  In particular, in the present embodiment, in a state where the dyed and processed wood (1) is immersed in the cleaning liquid (S), for example, the cleaning liquid (S) is forcibly introduced from one side end (1a) and the other end end (1b). Since the suction and discharge are performed, the cleaning can be performed more effectively as described below. That is, in the wood (1), because the conduit does not exactly match the growth direction (length direction) and is gently bent, the end of some of the conduits is not a culvert, There may be openings on both sides and plate. For example, in the case where one end of a predetermined conduit is opened in the plate surface and the other end is opened in the other side end (1b), the wood (1) is not immersed in the cleaning liquid (S) but in the air. When the cleaning process is performed, air is introduced into one end of the predetermined conduit, and the cleaning liquid (S) is not introduced into the conduit. As a result, the excess dye component in the conduit and the vicinity of the conduit cannot be reliably washed out, and the excess dye component may remain and undesirably cause color unevenness.

  On the other hand, in this embodiment, since it wash | cleans in the state which immersed wood (1) in the washing | cleaning liquid (S) in a processing tank (10), the end of the predetermined conduit | pipe in wood is on a plate surface. Even if the pipe is open, the cleaning liquid (S) in the treatment layer (10) is introduced into the conduit from one end and discharged from the other end, so that the excess dye component in the conduit can be surely removed. It can be washed out and the conduits can be reliably washed.

  As described above, in this embodiment, since the dyed and processed wood (1) is washed in the state of being immersed in the washing liquid (S), the washing liquid (S) can be surely introduced to the entire area of the wood, and excess dyeing can be performed. The liquid component can be removed more reliably, and the cleaning effect can be further improved.

  Further, in the cleaning process of the present embodiment, after performing the one-way cleaning process for introducing the cleaning liquid (S) from the one end (1a) of the wood (1), the direction of the cleaning liquid (S) is switched, Since the other-direction cleaning process for introducing the cleaning liquid (S) from the side end (1b) is performed, the cleaning liquid (S) can be more reliably distributed throughout the interior of the wood, and the extra volume can be more reliably increased. The dye liquor component can be removed.

  In the present embodiment, the moisture content of the wood (1) is increased to 100 to 140% by the cleaning treatment, and then the moisture content is lowered by the drying treatment. Therefore, the moisture content of the wood is freely adjusted. be able to. For this reason, for example, even if a dry material in a climatic state having a moisture content of about 5 to 20% is used as a starting material (wood before dyeing), after the drying treatment, cutting or sticking with a moisture content of 40 to 80% It can be adjusted to a state suitable for. That is, even if a general-purpose and easy-to-handle desiccant is used as the starting material, there is no need to separately perform a step of adjusting the moisture content, and accordingly, the number of steps can be reduced and the production efficiency can be further improved.

  Furthermore, in this embodiment, since the drying process is performed by a cleaning apparatus that performs the cleaning process, it is not necessary to install a drying apparatus separately, and accordingly, the production facility can be reduced in size and simplified.

  In the present embodiment, when the washed wood (1) is dried, the air inside the wood is forced from the other side end (1b) while air is forcibly introduced into the wood from the one side end (1a). Since the air is sucked and discharged, the drying air can be sufficiently circulated to the inside of the wood and can be efficiently dried.

  Furthermore, in the present embodiment, the one-way drying process for introducing the drying air from the one side end (1a) and the other direction drying process for introducing the drying air from the other side end (1b) are sequentially switched. Therefore, it is possible to more reliably distribute the drying air to the entire interior of the wood, and to further improve the drying efficiency.

  Moreover, in the cleaning apparatus of the present embodiment, both ends of the wood (1) are sealed in the connection ports (22) and (22) of the connection members (20a and 20b) via the elastic packings (15) and (15). Since they are connected, the cleaning liquid (S) can be introduced into and discharged from the wood through the connecting members (20a) and (20b) at a predetermined pressure, so that the cleaning can be performed more efficiently.

  Moreover, even if the wood (1) is swollen by the cleaning liquid (S), the expansion is absorbed by the elastic shrinkage of the elastic packing (15), so that the sealing performance is maintained well and a high cleaning effect is achieved. It can be reliably maintained.

  5-7 is a figure which shows a washing | cleaning apparatus as 2nd Embodiment applicable to this invention. As shown in these drawings, this cleaning device has connecting members (120a) (120b) connected to both ends of the cleaned wood (1).

  The connection members (120a) and (120b) are provided with wood accommodating recesses (133) and (133) capable of accommodating the ends of the wood (1), and the open ends of the recesses (133) and (133) are connected to the connection ports. (122) (122).

  Packing installation grooves (123) and (123) are provided on the inner peripheral surface of the wood accommodating recesses (133) and (133) continuously in the circumferential direction.

  In the packing installation grooves (123) (123), tubular elastic packings (115) (115) having a hollow structure are accommodated.

  On the upper wall of the connecting members (120a) and (120b), there are provided air introduction pipes (126) and (126) communicating with the tubular elastic packings (115) and (115). Furthermore, compressed air introducing means (not shown) for introducing compressed air is connected to the air introducing pipes (126) (126), and the air introducing pipes (126) (126) are connected from the compressed air introducing means. The compressed air can be introduced into the inside of the tubular elastic packing (115) (115) through this, and the elastic packing (115) (115) is expanded by the introduction.

  In addition, fluid outlets (135) and (135) are provided in the center of the outer walls of the connecting members (120a) and (120b). Similarly to the above, the supply side first pipe (41) is connected to the inlet / outlet (135) of the one side connection member (120a) in a sealed state via the one side connection pipe (40), and the other side The discharge side first pipe (51) is connected in a sealed state to the inlet / outlet (135) of the side connection member (120b) via the other side connection pipe (50).

  In the cleaning apparatus of the second embodiment, the other configurations are the same as those of the first embodiment. Therefore, the same or corresponding parts are denoted by the same or corresponding reference numerals, and redundant description is omitted.

  In this cleaning apparatus, when the dyed processed wood (1) subjected to the dyeing process as described above is cleaned, as shown in FIG. 6, both ends of the dyed processed wood (1) are connected to connecting members. (120a) and (120b) through the connection ports (122) and (122) and disposed in the wood installation recesses (133) and (133).

  Subsequently, compressed air is introduced into the tubular elastic packing (115) (115) through the air introduction pipes (126) (126), and the elastic packing (115) (115) is expanded as shown in FIG. Let As a result, the elastic packing (115) (115) is elastically brought into close contact with the outer peripheral surfaces of both ends of the dyed wood (1), and both ends (1a) (1b) of the dyed wood (1) are connected to the connecting member (120a). ) (120b) In the state accommodated in each recess (133) (133), both ends of the dyed wood (1) are connected in a sealed state to the connecting members (120a) (120b).

  In the second embodiment as well, as in the first embodiment, a waterproof tape is applied in advance to the contact area of the dyed wood (1) with the elastic packing (115) (115). As a result, the sealing performance can be further improved.

  After setting the dyed wood (1) in this way, supply of the cleaning liquid (S) is started in the same manner as in the first embodiment. That is, the cleaning liquid (S) is introduced into the pressurized state in the one side connecting member (120a), and the cleaning liquid (S) is forcibly introduced into the wood from the one side end (1a). On the other hand, the inside of the other side connection member (120b) is set to a negative pressure, and the cleaning liquid (S) inside the wood is sucked and discharged from the other side end (1b).

  Further, as necessary, the supply direction of the cleaning liquid (S) is switched as in the first embodiment. That is, the cleaning liquid (S) is pressurized and supplied into the other side connecting member (120b), and the cleaning liquid (S) is introduced into the wood from the other side end (1b), and the inside of the one side connecting member (120a) is negatively charged. The pressure is set to a pressure, and the cleaning liquid (S) inside the wood is sucked and discharged from the one side end (1a).

  In this way, the cleaning liquid (S) is circulated so as to sufficiently permeate the inside of the wood, and excess dye solution components inside the wood are discharged and removed together with the cleaning liquid (S) to the outside of the wood.

  After the cleaning process is completed, the flooring material is manufactured by sequentially performing a drying (draining) process, a flitch preparation process, a cutting process, and a single-plate attaching process in the same manner as in the first embodiment.

  In the cleaning device of the second embodiment, the same operational effects can be obtained as in the first embodiment.

  Furthermore, in this cleaning apparatus, the elastic packing (115) is hollow tube-shaped, and the compressed air is introduced into the inside, thereby expanding the elastic packing (115) to the wood (1). Since it is made to contact | adhere, the adhesion degree with respect to the timber (1) of packing (115) can be adjusted with the introduction amount (introduction pressure) of the compressed air to elastic packing (115). As described above, since the degree of adhesion of the packing (115) can be easily adjusted by the amount of compressed air introduced, the degree of sealing can be adjusted freely, and the sealing performance can be further improved.

  In the embodiment and the like, the case where a decorative flooring material is manufactured has been described as an example. However, the present invention is not limited thereto, and the present invention also applies to the case where other decorative wood such as a decorative wall material is manufactured. The same applies.

  The present invention is applicable to a method for producing colored wood in which wood is dyed and dyed with a dye solution.

It is process drawing for demonstrating the manufacturing method of the decorative flooring which is 1st Embodiment of this invention. It is a top view which shows roughly the principal part of the washing | cleaning apparatus applied to the manufacturing method of 1st Embodiment. It is a circuit diagram shown in the state during the one-way cleaning process in the cleaning apparatus of the first embodiment. It is a circuit diagram which shows the state in the other direction washing | cleaning process in the washing | cleaning apparatus of 1st Embodiment. It is a figure which shows the principal part of the washing | cleaning apparatus applied to the manufacturing method of the decorative floor material which is 2nd Embodiment of this invention, Comprising: The figure (a) is a horizontal sectional view, The figure (b) is the figure ( It is D1-D1 sectional view taken on the line of a). It is a figure which shows the principal part of the washing | cleaning apparatus which is 2nd Embodiment in a board | plate material unsealed state, Comprising: The figure (a) is a horizontal sectional view, The figure (b) is the D2-D2 line cross section of the figure (a). FIG. It is a figure which shows the principal part of the washing | cleaning apparatus which is 2nd Embodiment in a board | plate material sealing state, Comprising: The same figure (a) is a horizontal sectional view, The same figure (b) is D3-D3 sectional view taken on the line of the same figure (a). It is.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wood 1a One side end 1b The other side end 10 Processing liquid tank 20a, 120a One side connection member 20b, 120b The other side connection member S Cleaning fluid

Claims (10)

A dyeing process for dyeing wood with dye liquor;
Washing the dyed wood with a washing liquid to remove excess dyeing liquid components, and
In the washing step, the cleaning liquid inside the wood is sucked and discharged from the other side mouth while forcibly introducing the washing liquid into the wood from one side of the dyed wood. Production method. The cleaning step is performed in a state where the dyed and processed wood is immersed in the processing liquid stored in the processing liquid tank ,
The method for producing colored wood according to claim 1, wherein the treatment liquid is the same type as the cleaning liquid or water .   As a cleaning solution, an aqueous solution containing 0.5 to 3% acetic acid, an aqueous solution containing 2 to 4% formic acid, an aqueous solution containing 1 to 5% ammonia sulfate, and an aqueous solution containing 5 to 10% sodium sulfate The method for producing colored wood according to claim 1 or 2, wherein a material selected from among the above is used.   The cleaning step includes a one-way cleaning process that introduces a cleaning liquid from one end of the wood and discharges it from the other end, and a two-way cleaning process that introduces a cleaning liquid from the other end of the wood and discharges it from the one end. The manufacturing method of the colored wood of any one of Claims 1-3 performed.   The method for producing colored wood according to any one of claims 1 to 4, wherein wood having a moisture content of 5 to 20% is used as wood before dyeing. And further comprising a drying step of drying the washed wood,
6. The drying process according to claim 1, wherein air in the wood is sucked and discharged from the other end of the wood while forcibly introducing air into the wood from the one end of the wood. Of manufacturing colored wood.   The method for producing colored wood according to claim 6, wherein the moisture content of the dried wood is adjusted to 40 to 80%.   The method for producing colored wood according to any one of claims 1 to 7, wherein wood having a thickness of 10 to 100 mm is used as wood before dyeing. A step of obtaining colored wood by the production method according to claim 1;
Cutting the colored wood to obtain a colored veneer, and a method for producing the colored veneer. A step of obtaining colored wood by the production method according to claim 1;
Cutting colored wood to obtain a colored veneer;
A method of manufacturing a decorative board material, comprising: attaching a colored veneer as a decorative layer to a substrate to obtain a decorative board material.

Images